<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        *{
            margin: 0px;
            padding: 0px;
        }
        .re{
            width: 980px;
            height: 700px;
            border: 1px solid rebeccapurple;
            margin: 0px auto;
        }
        .re-tui{
            width: 70%;
            height: 100%;
            border: 1px solid red;
            float: left;
        }
        .re-tui-left{
            width:190px ;
            height:70px ;
            border: 1px solid blue;
            float: left;
             
        }
    </style>
</head>

<body>
    <div class="re">
        <div class="re-tui">
            <ul >
                <li class="re-tui-left">

                </li>
            </ul>
        </div>
    </div>
</body>
</html>